Energy saving and High capacity polymer battery | Compatible with multiple devices | Over charge and over discharge protection | Rapid charging | Redmi Power Bank comes with high-density advanced Li-polymer batteries that makes it more durable and optimizes charging efficiency | The new Redmi Power Bank comes with 18W Fast Charging. It supports 5.1V/2.4A, 9V/ 2A MAX and 12V/1.5A MAX charging outputs that ensures efficient and quick charging for your devices | Now charge not just mobiles but tablets, BT speakers, earphones, headsets, fitness bands etc